The WATERLINE GH process titrators are developed for the measurement of total hardness in boiler water, cooling water or potable water. The measurement principle is a complexometric titration of the water hardness with a special combination reagent which includes a buffer solution, the titrant solution and a hardness specific indicator. A photodetection system determines the titration end point (color change from red to blue). The result is displayed on the touchscreen as ppm CaCO3. The main applications for the analyzer are the survey and monitoring of water treatment plants and the analysis of drinking water.
The analyzer consists of a control unit with touchscreen and an analysis unit with a measuring chamber, valve, dosing pump (incl. stepper motor) and all required tube connections. The control unit includes a microprocessor which controls the automatic measurement incl. sampling, rinsing, titration and surveillance of the photodetection system. The analysis results can be used for the monitoring and control of a supervised process.
- Automatic measurement incl. self test and drift compensation
- Measurement ranges:
WATERLINE GH05: 4 – 70 ppm CaCO3
WATERLINE GH10: 30 – 350 ppm CaCO3
WATERLINE GH20: 50 – 900 ppm CaCO3
WATERLINE GH20: 50 – 900 ppm CaCO3 - Easy operation via touchscreen
- Adjustable limit value and alarm value
- Programmable analog output (0/4-20 mA)
- External start/stop of an analysis possible
- No external calibration required.
- Multi-range power supply (110–230 Volt,50–60 Hz) for variable use.
- Including 2 polycarbonate wall cabinets (for control unit and analysis unit)
Parameter | Total Hardness | ||
Description | Microprocessor-controlled analyzer for the determination of hardness in water | ||
Typical Applications | Monitoring and control of water treatment, water blending and potable water plants | ||
Analysis Method | Complexiometric titration of the total hardness using a combined reagent, comprising titer and hardness indicator | ||
Type | GH05 | GH10 | GH20 |
---|---|---|---|
Measuring Range | 4-70 ppm | 30-350 ppm | 50-900 ppm |
Resolution | 0,7 ppm | 7 ppm | 10 ppm |
Accuracy | 5 % of end value | ||
Reproducibility | 3 % of end value | ||
Zero-point Stability | automatic adjustment | ||
Number of Samples | 1 | ||
Sample | |||
Operating Pressure | 0,1 - 10 bar | ||
Temperature | 5 - 30 °C | ||
Sample Volume | 25 ml per analysis (excluding rinsing) | ||
Sample Condition | clear, with particles < 0.5 g/l ; < 50 µm | ||
Chemical Demands | pH 4 - 10, Fe < 3 ppm, Cu < 0,2 ppm, CO3 2- < 10 mmol/L | ||
Drain | pressure free into open drain | ||
Reagents | |||
Number | 1, (optional 2) | ||
Storage Temp. | 5 – 20 °C | ||
Usage/analysis | hardness dependent | ||
Reagent volume | 500 ml | ||
Suitable for | hardness dependent | ||
Analysis | |||
Cycle (approx.) | 13 min., incl. rinsing | ||
Sample interval | 1 – 99 min or external start/stop | ||
Optional | 2nd pump (for cleaning solution) |